在使用anammox细菌的生物电化学脱过程中最大限度地减少副产品的形成
Hyejeong Kwon1, Bo Li2, Min Xu3
1Civil, Construction, and Environmental Engineering, The University of Alabama, Tuscaloosa, AL, USA.
Journal of hazardous materials
|April 5, 2025
概括
将无氧氨氧化细菌 (anammox) 引入生物电化学脱 (BED) 显著减少了有害的副产品,如酸盐和氧化. 这种协同方法提高了酸盐整治的废水质量.
科学领域:
- 环境微生物学环境微生物学
- 水处理技术水处理技术.
- 生物地质化学循环 生物地质化学循环
背景情况:
- 自营生物电化学脱 (BED) 是有效的酸盐去除,但产生有问题的副产品.
- 化物 (NO2-),氧化 (N2O) 和 (NH4+) 的累积危害了废水质量和气候目标.
研究的目的:
- 研究将无氧氧化细菌 (anammox) 与BED.集成的协同作用潜力.
- 为了减轻副产品的积累和提高酸盐整治效率.
主要方法:
- 结合生物电化学脱与anammox过程 (Anammox_BED).
- 利用元基因组和元转录组分析来评估微生物社区的转移和基因表达.
- 量化副产品水平 (NO2-,N2O,NO) 和微生物的丰度.
主要成果:
- Anammox_BED减少了67%的化物积累和80%的氧化,同时消除了氧化.
- 亚纳莫克斯物种的丰富性 *Ca. 布罗卡迪亚·萨波罗内斯 (Brocadia sapporoensis) 的数量增加了三倍.
- 细菌群体的转变,有利于氨同化,而不是细胞外电子转移用于化物利用.
结论:
- 将anammox细菌与BED集成,有效地减轻了不良副产品的形成.
- 协同的BED-Anammox工艺通过重定向酸盐代谢来增强酸盐修复.
- 这种方法为改善废水处理和气候适应提供了一个有希望的战略.
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